Method for a device to perform a function in response to a command from a printer

ABSTRACT

A method is disclosed of controlling a function of a device. The device is operative to perform the function in response to a command from a printer. The method starts by printing a control interface containing information relating to the function and coded data. The coded data is indicative of an identity of the control interface and of at least one reference point of the control interface. Next, indicating data is received by the printer from a sensing device. The indicating data contains the identity of the control interface and at least one position of the sensing device relative to the control interface. The sensing device forms the indicating data when placed in an operative position relative to the control interface using the coded data. Finally, the printer issues the command relating to the function to the device.

CROSS REFERENCE TO RELATED APPLICATION

The present application is a continuation of U.S. application Ser. No.12/505,531 filed on Jul. 20, 2009, now Issued U.S. Pat. No. 7,783,280which is a continuation of U.S. application Ser. No. 11/491,121 filed onJul. 24, 2006, now issued U.S. Pat. No. 7,580,698, which is acontinuation of U.S. application Ser. No. 10/291,525 filed on Nov. 12,2002, now Issued U.S. Pat. No. 7,162,269, which is a continuation ofU.S. application Ser. No. 09/721,895 filed on Nov. 25, 2000, now IssuedU.S. Pat. No. 7,295,839, all of which are herein incorporated byreference.

FIELD OF INVENTION

The present invention relates generally to control devices and morespecifically to methods and systems for enabling telephones to becontrolled through distributed computer systems.

CO-PENDING APPLICATIONS

Various methods, systems and apparatus relating to the present inventionare disclosed in the following applications and patents filed by theapplicant or assignee of the present invention:

6,530,339 6,631,897 6,428,133 6,526,658 6,315,399 6,338,548 6,540,3196,328,431 6,328,425 6,991,320 6,383,833 6,464,332 6,390,591 7,018,0166,328,417 7,721,948 7,079,712 6,825,945 7,330,974 6,813,039 7,190,4746,987,506 6,824,044 7,038,797 6,980,318 6,816,274 7,102,772 7,350,2366,681,045 6,678,499 6,679,420 6,963,845 6,976,220 6,728,000 7,110,1267,173,722 6,976,035 6,813,558 6,766,942 6,965,454 6,995,859 7,088,4596,720,985 7,286,113 6,922,779 6,978,019 6,847,883 7,131,058 7,295,8397,406,445 7,533,031 6,959,298 6,973,450 7,150,404 6,965,882 7,233,9247,707,082 7,593,899 7,175,079 7,068,382 7,007,851 6,957,921 6,457,8837,062,651 6,789,194 6,789,191 6,644,642 6,502,614 6,622,999 6,669,3856,549,935 6,987,573 6,727,996 6,591,884 6,439,706 6,760,119 7,295,3327,064,851 6,826,547 6,290,349 6,428,155 6,785,016 6,831,682 6,741,8716,927,871 6,980,306 6,965,439 6,982,798 6,870,966 6,822,639 6,474,8886,627,870 6,724,374 6,788,982 7,263,270 6,788,293 6,946,672 6,737,5917,091,960 7,369,265 6,792,165 7,105,753 7,055,739 7,233,320 6,830,1966,832,717 7,182,247 6,957,768 7,456,820 7,170,499 7,106,888 7,123,2396,409,323 6,281,912 6,604,810 6,318,920 6,488,422 6,795,215 7,154,6386,859,289 6,977,751 6,398,332 6,394,573 6,622,923 6,454,482 6,808,3306,527,365 6,474,773 6,550,997

BACKGROUND

Telephone systems including fixed line and mobile telephones(hereinafter collectively referred to as “phones”) are an essentialcommunication tool in modern society. Advances in telecommunications hasenabled both voice and data transmission over phones thereby allowingthese phones to have additional functions such as short message services(SMS), network capability such as email, and Internet access. There arealso a variety of standard (and de facto standard) local-area andpersonal-area wireless (WLAN and WPAN) protocols which a phone mayutilize to provide local network access, for example via radio orinfrared.

Phones are traditionally controlled via the use of keypads to enter therequired phone numbers. Other control functions include last numberredial and, in more advanced systems, voice-activated dialing.

The form factor of phones may be constrained by their need to provide auser interface in the form of a keypad and/or a display.

SUMMARY OF INVENTION

According to an aspect of the present invention there is provided amethod of controlling a function of a device, the device being operativeto perform the function in response to a command from a printer, themethod including the steps of:

printing by the printer a control interface containing informationrelating to the function and coded data, the coded data being indicativeof an identity of the control interface and of at least one referencepoint of the control interface;

receiving, in the printer, indicating data from a sensing deviceregarding the identity of the control interface and at least oneposition of the sensing device relative to the control interface, thesensing device forming the indicating data when placed in an operativeposition relative to the control interface using the coded data; and

issuing, by the printer and from the indicating data, the commandrelating to the function to the device.

Other spects are also disclosed.

BRIEF DESCRIPTION OF DRAWINGS

Preferred and other embodiments of the invention will now be described,by way of non-limiting example only, with reference to the accompanyingdrawings, in which:

FIG. 1 is a schematic of a the relationship between a sample printednetpage and its online page description;

FIG. 2 is a schematic view of a interaction between a netpage pen, anetpage printer, a netpage page server, and a netpage applicationserver;

FIG. 3 is a schematic view of a high-level structure of a printednetpage and its online page description;

FIG. 4 a is a plan view showing a structure of a netpage tag;

FIG. 4 b is a plan view showing a relationship between a set of the tagsshown in FIG. 4 a and a field of view of a netpage sensing device in theform of a netpage pen;

FIG. 5 a is a plan view showing an alternative structure of a netpagetag;

FIG. 5 b is a plan view showing a relationship between a set of the tagsshown in FIG. 5 a and a field of view of a netpage sensing device in theform of a netpage pen;

FIG. 5 c is a plan view showing an arrangement of nine of the tags shownin FIG. 5 a where targets are shared between adjacent tags;

FIG. 5 d is a plan view showing the interleaving and rotation of thesymbols of the four codewords of the tag shown in FIG. 5 a;

FIG. 6 is a schematic view of a set of user interface flow documenticons;

FIG. 7 is a schematic view of a set of user interface page layoutelement icons;

FIG. 8 is a schematic view of telephone control interactions;

FIG. 9 is a schematic view of a user phone class diagram;

FIG. 10 is a schematic view of a phone information class diagram;

FIG. 11 is a schematic view of a local network access class diagram;

FIG. 12 is a schematic view of a contact list class diagram;

FIG. 13 is a schematic view of a phone type class diagram;

FIG. 14 is a schematic view of a phone remote control class diagram;

FIG. 15 is a schematic view of a phone-specific remote control userinterface flow;

FIG. 16 is a schematic view of a multi-phone remote control userinterface flow;

FIG. 17 is a schematic view of a contact list user interface flow;

FIG. 18 is a schematic view of a business card user interface flow;

FIG. 19 is a schematic view of a phone control user interface flow;

FIG. 20 is a schematic view of a new phone set up user interface flow;

FIG. 21 is a schematic view of a contact list;

FIG. 22 is a schematic view of a compose short message interface;

FIG. 23 is a schematic view of a sample business card;

FIG. 24 is a schematic view of a user phone list;

FIG. 25 is a schematic view of an add new phone list;

FIG. 26 is a schematic view of a confirm new phone list;

FIG. 27 is a schematic view of a phone-specific control; and

FIG. 28 is a schematic view of a multi-phone control.

DETAILED DESCRIPTION OF PREFERRED AND OTHER EMBODIMENTS

Note: Memjet™ is a trademark of Silverbrook Research Pty Ltd, Australia.

In the preferred embodiment, the invention is configured to work withthe netpage networked computer system, a summary of which is given belowand a detailed description of which is given in our co-pendingapplications, including in particular applications U.S. Ser. No.09/721,893 filed Nov. 25, 2000 (U.S. Pat. No. 6,792,165), U.S. Ser. No.09/722,142 filed Nov. 25, 2000 (U.S. Pat. No. 6,965,439), U.S. Ser. No.09/575,129 filed May 23, 2000 (U.S. Pat. No. 7,233,320) and U.S. Ser.No. 09/575,141 filed May 23, 2000 (U.S. Pat. No. 6,428,133). It will beappreciated that not every implementation will necessarily embody all oreven most of the specific details and extensions described in theseapplications in relation to the basic system. However, the system isdescribed in its most complete form to assist in understanding thecontext in which the preferred embodiments and aspects of the presentinvention operate.

In brief summary, the preferred form of the netpage system employs acomputer interface in the form of a mapped surface, that is, a physicalsurface which contains references to a map of the surface maintained ina computer system. The map references can be queried by an appropriatesensing device. Depending upon the specific implementation, the mapreferences may be encoded visibly or invisibly, and defined in such away that a local query on the mapped surface yields an unambiguous mapreference both within the map and among different maps. The computersystem can contain information about features on the mapped surface, andsuch information can be retrieved based on map references supplied by asensing device used with the mapped surface. The information thusretrieved can take the form of actions which are initiated by thecomputer system on behalf of the operator in response to the operator'sinteraction with the surface features.

In its preferred form, the netpage system relies on the production of,and human interaction with, netpages. These are pages of text, graphicsand images printed on ordinary paper or other media, but which work likeinteractive web pages. Information is encoded on each page using inkwhich is substantially invisible to the unaided human eye. The ink,however, and thereby the coded data, can be sensed by an opticallyimaging pen and transmitted to the netpage system.

In the preferred form, active buttons and hyperlinks on each page can beclicked with the pen to request information from the network or tosignal preferences to a network server. In one embodiment, text writtenby hand on a netpage is automatically recognized and converted tocomputer text in the netpage system, allowing forms to be filled in. Inother embodiments, signatures recorded on a netpage are automaticallyverified, allowing e-commerce transactions to be securely authorized.

As illustrated in FIG. 1, a printed netpage 1 can represent aninteractive form which can be filled in by the user both physically, onthe printed page, and “electronically”, via communication between thepen and the netpage system. The example shows a “Request” formcontaining name and address fields and a submit button. The netpageconsists of graphic data 2 printed using visible ink, and coded data 3printed as a collection of tags 4 using invisible ink. The correspondingpage description 5, stored on the netpage network, describes theindividual elements of the netpage. In particular it describes the typeand spatial extent (zone) of each interactive element (i.e. text fieldor button in the example), to allow the netpage system to correctlyinterpret input via the netpage. The submit button 6, for example, has azone 7 which corresponds to the spatial extent of the correspondinggraphic 8.

As illustrated in FIG. 2, the netpage pen 101, a preferred form of whichis described in co-pending application U.S. Ser. No. 09/721,893 filedNov. 25, 2000 (U.S. Pat. No. 6,792,165), works in conjunction with anetpage printer 601, an Internet-connected printing appliance for home,office or mobile use. The pen is wireless and communicates securely withthe netpage printer via a short-range radio link 9.

The netpage printer 601, preferred forms of which are described inco-pending applications U.S. Ser. No. 09/722,142 filed Nov. 25, 2000(U.S. Pat. No. 6,965,439) and U.S. Ser. No. 09/693,514 filed Oct. 20,2000, is able to deliver, periodically or on demand, personalizednewspapers, magazines, catalogs, brochures and other publications, allprinted at high quality as interactive netpages. Unlike a personalcomputer, the netpage printer is an appliance which can be, for example,wall-mounted adjacent to an area where the morning news is firstconsumed, such as in a user's kitchen, near a breakfast table, or nearthe household's point of departure for the day. It also comes intabletop, desktop, portable and miniature versions.

Netpages printed at their point of consumption combine the ease-of-useof paper with the timeliness and interactivity of an interactive medium.

As shown in FIG. 2, the netpage pen 101 interacts with the coded data ona printed netpage 1 and communicates, via a short-range radio link 9,the interaction to a netpage printer. The printer 601 sends theinteraction to the relevant netpage page server 10 for interpretation.In appropriate circumstances, the page server sends a correspondingmessage to application computer software running on a netpageapplication server 13. The application server may in turn send aresponse which is printed on the originating printer.

The netpage system is made considerably more convenient in the preferredembodiment by being used in conjunction with high-speedmicroelectromechanical system (MEMS) based inkjet (Memjet™) printers,for example as described in co-pending application U.S. Ser. No.09/575,141 filed May 23, 2000 (U.S. Pat. No. 6,428,133). In thepreferred form of this technology, relatively high-speed andhigh-quality printing is made more affordable to consumers. In itspreferred form, a netpage publication has the physical characteristicsof a traditional newsmagazine, such as a set of letter-size glossy pagesprinted in full color on both sides, bound together for easy navigationand comfortable handling.

The netpage printer exploits the growing availability of broadbandInternet access. The netpage printer can also operate with slowerconnections, but with longer delivery times and lower image quality. Thenetpage system can also be enabled using existing consumer inkjet andlaser printers, although the system will operate more slowly and willtherefore be less acceptable from a consumer's point of view. In otherembodiments, the netpage system is hosted on a private intranet. Instill other embodiments, the netpage system is hosted on a singlecomputer or computer-enabled device, such as a printer.

Netpage publication servers 14 on the netpage network are configured todeliver print-quality publications to netpage printers. Periodicalpublications are delivered automatically to subscribing netpage printersvia pointcasting and multicasting Internet protocols. Personalizedpublications are filtered and formatted according to individual userprofiles.

A netpage printer can be configured to support any number of pens, and apen can work with any number of netpage printers. In the preferredimplementation, each netpage pen has a unique identifier. A householdmay have a collection of colored netpage pens, one assigned to eachmember of the family. This allows each user to maintain a distinctprofile with respect to a netpage publication server or applicationserver.

A netpage pen can also be registered with a netpage registration server11 and linked to one or more payment card accounts. This allowse-commerce payments to be securely authorized using the netpage pen. Thenetpage registration server compares the signature captured by thenetpage pen with a previously registered signature, allowing it toauthenticate the user's identity to an e-commerce server. Otherbiometrics can also be used to verify identity. A version of the netpagepen includes fingerprint scanning, verified in a similar way by thenetpage registration server.

Although a netpage printer may deliver periodicals such as the morningnewspaper without user intervention, it can be configured never todeliver unsolicited junk mail. In its preferred form, it only deliversperiodicals from subscribed or otherwise authorized sources. In thisrespect, the netpage printer is unlike a fax machine or e-mail accountwhich is visible to any junk mailer who knows the telephone number ore-mail address.

Each object model in the system is described using a Unified ModelingLanguage (UML) class diagram. A class diagram consists of a set ofobject classes connected by relationships, and two kinds ofrelationships are of interest here: associations and generalizations. Anassociation represents some kind of relationship between objects, i.e.between instances of classes. A generalization relates actual classes,and can be understood in the following way: if a class is thought of asthe set of all objects of that class, and class A is a generalization ofclass B, then B is simply a subset of A. Each class is drawn as arectangle labeled with the name of the class. It contains a list of theattributes of the class, separated from the name by a horizontal line,and a list of the operations of the class, separated from the attributelist by a horizontal line. In the class diagrams which follow, however,operations are never modeled. An association is drawn as a line joiningtwo classes, optionally labeled at either end with the multiplicity ofthe association. The default multiplicity is one. An asterisk (*)indicates a multiplicity of “many”, i.e. zero or more. Each associationis optionally labeled with its name, and is also optionally labeled ateither end with the role of the corresponding class. An open diamondindicates an aggregation association (“is-part-of”), and is drawn at theaggregator end of the association line. A generalization relationship(“is-a”) is drawn as a solid line joining two classes, with an arrow (inthe form of an open triangle) at the generalization end. When a classdiagram is broken up into multiple diagrams, any class which isduplicated is shown with a dashed outline in all but the main diagramwhich defines it. It is shown with attributes only where it is defined.

Netpages are the foundation on which a netpage network is built. Theyprovide a paper-based user interface to published information andinteractive services. A netpage consists of a printed page (or othersurface region) invisibly tagged with references to an onlinedescription of the page. The online page description is maintainedpersistently by a netpage page server. The page description describesthe visible layout and content of the page, including text, graphics andimages. It also describes the input elements on the page, includingbuttons, hyperlinks, and input fields. A netpage allows markings madewith a netpage pen on its surface to be simultaneously captured andprocessed by the netpage system.

Multiple netpages can share the same page description. However, to allowinput through otherwise identical pages to be distinguished, eachnetpage is assigned a unique page identifier. This page ID hassufficient precision to distinguish between a very large number ofnetpages.

Each reference to the page description is encoded in a printed tag. Thetag identifies the unique page on which it appears, and therebyindirectly identifies the page description. The tag also identifies itsown position on the page. Characteristics of the tags are described inmore detail below.

Tags are printed in infrared-absorptive ink on any substrate which isinfrared-reflective, such as ordinary paper. Near-infrared wavelengthsare invisible to the human eye but are easily sensed by a solid-stateimage sensor with an appropriate filter.

A tag is sensed by an area image sensor in the netpage pen, and the tagdata is transmitted to the netpage system via the nearest netpageprinter. The pen is wireless and communicates with the netpage printervia a short-range radio link. Tags are sufficiently small and denselyarranged that the pen can reliably image at least one tag even on asingle click on the page. It is important that the pen recognize thepage ID and position on every interaction with the page, since theinteraction is stateless. Tags are error-correctably encoded to makethem partially tolerant to surface damage.

The netpage page server maintains a unique page instance for eachprinted netpage, allowing it to maintain a distinct set of user-suppliedvalues for input fields in the page description for each printednetpage.

The relationship between the page description, the page instance, andthe printed netpage is shown in FIG. 3. The printed netpage may be partof a printed netpage document 45. The page instance is associated withboth the netpage printer which printed it and, if known, the netpageuser who requested it.

In a preferred form, each tag identifies the region in which it appears,and the location of that tag within the region. A tag may also containflags which relate to the region as a whole or to the tag. One or moreflag bits may, for example, signal a tag sensing device to providefeedback indicative of a function associated with the immediate area ofthe tag, without the sensing device having to refer to a description ofthe region. A netpage pen may, for example, illuminate an “active area”LED when in the zone of a hyperlink.

In a preferred embodiment, each tag contains an easily recognizedinvariant structure which aids initial detection, and which assists inminimizing the effect of any warp induced by the surface or by thesensing process. The tags preferably tile the entire page, and aresufficiently small and densely arranged that the pen can reliably imageat least one tag even on a single click on the page. It is importantthat the pen recognize the page ID and position on every interactionwith the page, since the interaction is stateless.

In a preferred embodiment, the region to which a tag refers coincideswith an entire page, and the region ID encoded in the tag is thereforesynonymous with the page ID of the page on which the tag appears. Inother embodiments, the region to which a tag refers can be an arbitrarysubregion of a page or other surface. For example, it can coincide withthe zone of an interactive element, in which case the region ID candirectly identify the interactive element.

Each tag contains typically contains 16 bits of tag ID, at least 90 bitsof region ID, and a number of flag bits. Assuming a maximum tag densityof 64 per square inch, a 16-bit tag ID supports a region size of up to1024 square inches. Larger regions can be mapped continuously withoutincreasing the tag ID precision simply by using abutting regions andmaps. The distinction between a region ID and a tag ID is mostly one ofconvenience. For most purposes the concatenation of the two can beconsidered as a globally unique tag ID. Conversely, it may also beconvenient to introduce structure into the tag ID, for example to definethe x and y coordinates of the tag. A 90-bit region ID allows 2⁹⁰ (˜10²⁷or a thousand trillion trillion) different regions to be uniquelyidentified. Tags may also contain type information, and a region may betagged with a mixture of tag types. For example, a region may be taggedwith one set of tags encoding x coordinates and another set, interleavedwith the first, encoding y coordinates.

In one embodiment, 120 bits of tag data are redundantly encoded using a(15, 5) Reed-Solomon code. This yields 360 encoded bits consisting of 6codewords of 15 4-bit symbols each. The (15, 5) code allows up to 5symbol errors to be corrected per codeword, i.e. it is tolerant of asymbol error rate of up to 33% per codeword. Each 4-bit symbol isrepresented in a spatially coherent way in the tag, and the symbols ofthe six codewords are interleaved spatially within the tag. This ensuresthat a burst error (an error affecting multiple spatially adjacent bits)damages a minimum number of symbols overall and a minimum number ofsymbols in any one codeword, thus maximising the likelihood that theburst error can be fully corrected.

Any suitable error-correcting code code can be used in place of a (15,5) Reed-Solomon code, for example a Reed-Solomon code with more or lessredundancy, with the same or different symbol and codeword sizes;another block code; or a different kind of code, such as a convolutionalcode (see, for example, Stephen B. Wicker, Error Control Systems forDigital Communication and Storage, Prentice-Hall 1995, the contents ofwhich a herein incorporated by cross-reference).

One embodiment of the physical representation of the tag, shown in FIG.4 a and described in co-pending application U.S. Ser. No. 09/575,129filed May 23, 2000 (U.S. Pat. No. 7,233,320), includes fixed targetstructures 15, 16, 17 and variable data areas 18. The fixed targetstructures allow a sensing device such as the netpage pen to detect thetag and infer its three-dimensional orientation relative to the sensor.The data areas contain representations of the individual bits of theencoded tag data. To maximise its size, each data bit is represented bya radial wedge in the form of an area bounded by two radial lines andtwo concentric circular arcs. Each wedge has a minimum dimension of 8dots at 1600 dpi and is designed so that its base (its inner arc), is atleast equal to this minimum dimension. The height of the wedge in theradial direction is always equal to the minimum dimension. Each 4-bitdata symbol is represented by an array of 2×2 wedges. The fifteen 4-bitdata symbols of each of the six codewords are allocated to the fourconcentric symbol rings 18 a to 18 d in interleaved fashion. Symbols areallocated alternately in circular progression around the tag. Theinterleaving is designed to maximise the average spatial distancebetween any two symbols of the same codeword.

In order to support “single-click” interaction with a tagged region viaa sensing device, the sensing device must be able to see at least oneentire tag in its field of view no matter where in the region or at whatorientation it is positioned. The required diameter of the field of viewof the sensing device is therefore a function of the size and spacing ofthe tags. Assuming a circular tag shape, the minimum diameter of thesensor field of view 193 is obtained when the tags are tiled on aequilateral triangular grid, as shown in FIG. 4 b.

The tag structure just described is designed to allow both regulartilings of planar surfaces and irregular tilings of non-planar surfaces.Regular tilings are not, in general, possible on non-planar surfaces. Inthe more usual case of planar surfaces where regular tilings of tags arepossible, i.e. surfaces such as sheets of paper and the like, moreefficient tag structures can be used which exploit the regular nature ofthe tiling.

An alternative tag structure more suited to a regular tiling is shown inFIG. 5 a. The tag 4 is square and has four perspective targets 17. It issimilar in structure to tags described by Bennett et al. in U.S. Pat.No. 5,051,746. The tag represents sixty 4-bit Reed-Solomon symbols 47,for a total of 240 bits. The tag represents each one bit as a dot 48,and each zero bit by the absence of the corresponding dot. Theperspective targets are designed to be shared between adjacent tags, asshown in FIGS. 5 b and 5 c. FIG. 5 b shows a square tiling of 16 tagsand the corresponding minimum field of view 193, which must span thediagonals of two tags. FIG. 5 c shows a square tiling of nine tags,containing all one bits for illustration purposes.

Using a (15, 7) Reed-Solomon code, 112 bits of tag data are redundantlyencoded to produce 240 encoded bits. The four codewords are interleavedspatially within the tag to maximize resilience to burst errors.Assuming a 16-bit tag ID as before, this allows a region ID of up to 92bits. The data-bearing dots 48 of the tag are designed to not overlaptheir neighbors, so that groups of tags cannot produce structures whichresemble targets. This also saves ink. The perspective targets thereforeallow detection of the tag, so further targets are not required.

Although the tag may contain an orientation feature to allowdisambiguation of the four possible orientations of the tag relative tothe sensor, it is also possible to embed orientation data in the tagdata. For example, the four codewords can be arranged so that each tagorientation contains one codeword placed at that orientation, as shownin FIG. 5 d, where each symbol is labelled with the number of itscodeword (1-4) and the position of the symbol within the codeword (A-O).Tag decoding then consists of decoding one codeword at each orientation.Each codeword can either contain a single bit indicating whether it isthe first codeword, or two bits indicating which codeword it is. Thelatter approach has the advantage that if, say, the data content of onlyone codeword is required, then at most two codewords need to be decodedto obtain the desired data. This may be the case if the region ID is notexpected to change within a stroke and is thus only decoded at the startof a stroke. Within a stroke only the codeword containing the tag ID isthen desired. Furthermore, since the rotation of the sensing devicechanges slowly and predictably within a stroke, only one codewordtypically needs to be decoded per frame.

It is possible to dispense with perspective targets altogether andinstead rely on the data representation being self-registering. In thiscase each bit value (or multi-bit value) is typically represented by anexplicit glyph, i.e. no bit value is represented by the absence of aglyph. This ensures that the data grid is well-populated, and thusallows the grid to be reliably identified and its perspective distortiondetected and subsequently corrected during data sampling. To allow tagboundaries to be detected, each tag data must contain a marker pattern,and these must be redundantly encoded to allow reliable detection. Theoverhead of such marker patterns is similar to the overhead of explicitperspective targets. One such scheme uses dots positioned a variouspoints relative to grid vertices to represent different glyphs and hencedifferent multi-bit values (see Anoto Technology Description, AnotoApril 2000).

Decoding a tag results in a region ID, a tag ID, and a tag-relative pentransform. Before the tag ID and the tag-relative pen location can betranslated into an absolute location within the tagged region, thelocation of the tag within the region must be known. This is given by atag map, a function which maps each tag ID in a tagged region to acorresponding location. A tag map reflects the scheme used to tile thesurface region with tags, and this can vary according to surface type.When multiple tagged regions share the same tiling scheme and the sametag numbering scheme, they can also share the same tag map. The tag mapfor a region must be retrievable via the region ID. Thus, given a regionID, a tag ID and a pen transform, the tag map can be retrieved, the tagID can be translated into an absolute tag location within the region,and the tag-relative pen location can be added to the tag location toyield an absolute pen location within the region.

The tag ID may have a structure which assists translation through thetag map. It may, for example, encoded cartesian coordinates or polarcoordinates, depending on the surface type on which it appears. The tagID structure is dictated by and known to the tag map, and tag IDsassociated with different tag maps may therefore have differentstructures.

Two distinct surface coding schemes are of interest, both of which usethe tag structure described earlier in this section. The preferredcoding scheme uses “location-indicating” tags as already discussed. Analternative coding scheme uses “object-indicating” (or“function-indicating”) tags.

A location-indicating tag contains a tag ID which, when translatedthrough the tag map associated with the tagged region, yields a uniquetag location within the region. The tag-relative location of the pen isadded to this tag location to yield the location of the pen within theregion. This in turn is used to determine the location of the penrelative to a user interface element in the page description associatedwith the region. Not only is the user interface element itselfidentified, but a location relative to the user interface element isidentified. Location-indicating tags therefore trivially support thecapture of an absolute pen path in the zone of a particular userinterface element.

An object-indicating (or function-indicating) tag contains a tag IDwhich directly identifies a user interface element in the pagedescription associated with the region (or equivalently, a function).All the tags in the zone of the user interface element identify the userinterface element, making them all identical and thereforeindistinguishable. Object-indicating tags do not, therefore, support thecapture of an absolute pen path. They do, however, support the captureof a relative pen path. So long as the position sampling frequencyexceeds twice the encountered tag frequency, the displacement from onesampled pen position to the next within a stroke can be unambiguouslydetermined. As an alternative, the netpage pen 101 can contain a pair ormotion-sensing accelerometers, as described in our co-pendingapplication U.S. Ser. No. 09/721,893 filed Nov. 25, 2000 (U.S. Pat. No.6,792,165).

With either tagging scheme, the tags function in cooperation withassociated visual elements on the netpage as user interactive elementsin that a user can interact with the printed page using an appropriatesensing device in order for tag data to be read by the sensing deviceand for an appropriate response to be generated in the netpage system.

Each application user interface flow is illustrated as a collection ofdocuments linked by command arrows. A command arrow indicates that thetarget document is printed as a result of the user pressing thecorresponding command button on the source page. Some command arrows arelabeled with multiple commands separated by slashes (‘/’s), indicatingthat any one of the specified commands causes the target document to beprinted. Although multiple commands may label the same command arrow,they typically have different side-effects.

In application terms, it is important to distinguish between netpagedocuments and netpage forms. Documents contain printed information, aswell as command buttons which can be pressed by the user to requestfurther information or some other action. Forms, in addition to behavinglike normal documents, also contain input fields which can be filled inby the user. They provide the system with a data input mechanism. It isalso useful to distinguish between documents which contain genericinformation and documents which contain information specific to aparticular interaction between the user and an application. Genericdocuments may be pre-printed publications such as magazines sold at newsstands or advertising posters encountered in public places. Forms mayalso be pre-printed, including, for example, subscription formsencountered in pre-printed publications. They may, of course, also begenerated on-the-fly by a netpage printer in response to user requests.User-specific documents and forms are normally generated on the fly by anetpage printer in response to user requests. FIG. 6 shows a genericdocument 990, a generic form 991, a user-specific document 992, and auser-specific form 993.

Netpages which participate in a user interface flow are furtherdescribed by abstract page layouts. A page layout may contain variouskinds of elements, each of which has a unique style to differentiate itfrom the others. As shown in FIG. 7, these include fixed information994, variable information 995, input fields 996, command buttons 997,draggable commands 998, and text hyperlinks or hypertext links 999.

When a user interface flow is broken up into multiple diagrams, anydocument which is duplicated is shown with dashed outlines in all butthe main diagram which defines it.

Telephone Control Using the Netpage System

A netpage can be used to control a phone. The netpage can containprinted control buttons in the style of a telephone, or printed “call”buttons associated with contacts in a contact list or on a businesscard.

Commands generated by pen interactions with printed telephone controlscan be sent directly from the netpage printer to the telephone device,by wired or wireless control interface, including radio (e.g.BLUETOOTH™, a wireless personal area network standard). Commands canalso be sent to a business telephone system (e.g. a PABX system), or toa control node on a mobile telephony network.

In the case of a mobile telephone, the telephone can provide the penwith a data link to the netpage network, allowing pen interactions witha netpage to be resolved even while the pen is out-of-range of aprinter. If the netpage sensor is built into the mobile telephone, thenthe need for pen-telephone communication is eliminated, and the user isable to dial a number by simply pressing on a printed “call” link withthe telephone.

Controlling a phone via a netpage can have several advantages. Telephonenumbers encountered in netpage-enabled print media such as magazines andbusiness cards need no longer be manually dialed. A netpage-enabledaddress book entry can be used to automatically dial a number.Inexpensive phone user interfaces can proliferate. Since the phone userinterface can be decoupled from the phone itself, the form factor of thephone need no longer be constrained by the need to provide a userinterface as part of the phone, i.e. in the form of a keypad and/ordisplay. Conversely, the phone user interface can be provided on thephone in the form of printed netpage phone controls. Phone controls canbe customized by the user, both esthetically and functionally, and phonecontrols can be printed in combination with other device controls.

The following description illustrates the concepts of netpage telephonecontrol in detail. Although specific reference is made to a netpage pen,any netpage sensing device can be used. A netpage ‘thimble’ sensingdevice worn on the tip of a finger, for example, may be particularlysuited to interactive device and telephone control. Similarly, althoughspecific reference is made to a netpage printer, any netpage basestation can be used, i.e. any device which receives input from a netpagesensing device and either interprets the input directly or forwards theinput to one or more network servers for interpretation. A suitablynetpage-enabled mobile phone, or a suitably mobile-phone-enabled netpagepen, for example, can constitute an ideal mobile base station in manycircumstances, particularly with the advent of third-generation‘always-on’ packet-switched data connections.

Application Drawing Notation

Each application user interface flow is illustrated as a collection ofdocuments linked by command arrows. A command arrow indicates that thetarget document is printed as a result of the user pressing thecorresponding command button on the source page. Some command arrows arelabelled with multiple commands separated by slashes (‘/’s), indicatingthat any one of the specified commands causes the target document to beprinted. Although multiple commands may label the same command arrow,they typically have different side-effects.

In application terms, it is important to distinguish between netpagedocuments and netpage forms. Documents contain printed information, aswell as command buttons which can be pressed by the user to requestfurther information or some other action. Forms, in addition to behavinglike normal documents, also contain input fields which can be filled inby the user. They provide the system with a data input mechanism. It isalso useful to distinguish between documents which contain genericinformation and documents which contain information specific to aparticular interaction between the user and an application. Genericdocuments may be pre-printed publications such as magazines sold at newsstands or advertising posters encountered in public places. Forms mayalso be pre-printed, including, for example, subscription formsencountered in pre-printed publications. They may, of course, also begenerated on-the-fly by a netpage printer in response to user requests.User-specific documents and forms are normally generated on the fly by anetpage printer in response to user requests. FIG. 6 shows a genericdocument 990, a generic form 991, a user-specific document 992, and auser-specific form 993.

Netpages which participate in a user interface flow are furtherdescribed by abstract page layouts. A page layout may contain variouskinds of elements, each of which has a unique style to differentiate itfrom the others. As shown in FIG. 7, these include fixed information994, variable information 995, input fields 996, command buttons 997,draggable commands 998, and text hyperlinks or hypertext links 999.

When a user interface flow is broken up into multiple diagrams, anydocument which is duplicated is shown with dashed outlines in all butthe main diagram which defines it.

Telephone Control

The netpage system provides a mechanism for controlling telephonedevices such as mobile telephones and fixed telephones.

A netpage can contain printed telephone control buttons in the style ofa telephone keypad. Telephone controls can include digits (zero tonine), call, hangup, and last number redial.

In order for a phone to be controlled remotely in this way, the phonemust be registered for remote control with the netpage telephone controlapplication.

Commands generated by pen interactions with printed phone controlbuttons can also be sent directly from the netpage printer to thetelephone, by wired or wireless control interface, including infraredand radio (i.e. BLUETOOTH™).

For phones with no ability to accept remote control commands, callrequests can be sent by telephone control application to the phone'snetwork provider. The phone network provide can place and connect thecall on behalf of the user's phone.

In the netpage system, telephone control services are provided by one ormore telephone control applications running on servers distributed onthe network. User interactions with telephone control netpages arerouted to the appropriate telephone control application via theappropriate page server using normal netpage mechanisms.

Various telephone control interactions scenarios are illustrated in FIG.8. When a user invokes a telephone function on the phone control netpage504, the input is sent from the user's netpage pen 101 to the user'snetpage printer or other base station 503 in the usual way (A). Theinput is relayed to the application 502 in the usual way (B). On receiptof the input, the application identifies the designated phone 500 anddetermines the specified phone command.

If the designated phone 500 is directly accessible to the application,then the application may send the command code directly to the device(C1) (or equivalently to a telephone system network node capable ofcontrolling the device). This may be the case if the telephone isconnected to a network accessible to the application, e.g. a telephonenetwork provider. Otherwise the application may send the command code tothe originating printer 503 (C2). The printer may be modified to bereceptive to telephone control commands sent to it by a telephonecontrol application.

If the designated telephone 500 is directly accessible to the printer503, then the printer may send the command code directly to thetelephone (D1). This may be the case if the telephone 500 is connectedto a network accessible to the printer 503, e.g. a wired or wirelesswide-area or local-area network, or if the printer 503 and telephone 500can communicate directly by wire or wirelessly. Otherwise the printer503 may send the command code to the originating pen 101 (D2).

The pen may be modified to be receptive to telephone control commandssent to it by a printer. The pen may transmit the command code to thephone via its radio (e.g. BLUETOOTH™) transmitter, or it may beaugmented with an infrared transmitter for this purpose. In the lattercase, the pen's infrared transmitter must be in line of sight of thetelephone's infrared receiver.

Telephone Control Object Model

The phone control object model revolves around user phones and phoneremote controls.

Referring to FIG. 9, each netpage user 800 has one or more registereduser phones 501. Each user phone 501 has a phone alias name assigned bythe user, the date and time the phone was added, the phone number, theunique phone identifier, and an indicator of whether the phone provideslocal network access 508 (e.g. has a short range radio transceiver orinfrared receiver). Each user phone 501 may have phone model information506 associated with it, comprising the manufacturer and the phone model.Each user phone 501 may have a link key 507 associated with it. This isthe link key 507 used to authenticate a connection between a devicethrough which the telephone control application is acting and thecorresponding phone, when a trusted relationship has previously beenestablished. The user phone class diagram is shown in FIGS. 9 and 10.

Each user phone 501 has a phone type 505. The type can indicate a fixedphone 521, a mobile phone 522, or a PABX (or other type of businessphone system) phone 523. The phone type class diagram is shown in FIG.13.

A phone 500 may provide local network access, for example via infraredor radio. There are a variety of standard (and de facto standard)local-area and personal-area wireless (WLAN and WPAN) protocols which aphone may utilize to provide local network access, for example viainfrared or radio. These protocols include IEEE 802.11 (see the IEEE802.11 Standard, the contents of which are herein incorporated byreference), IEEE 802.15/BLUETOOTH™ (see L M Ericsson et al.,Specification of the Bluetooth System, Volume 1: Core, and Volume 2:Profiles, v1.0B, December 1999, the contents of which are hereinincorporated by reference), HomeRF/SWAP and IrDA. For illustrationpurposes, BLUETOOTH™ and Infrared Data Association (IrDA) are used whereappropriate in the description that follows as examples of radio andinfrared protocols respectively. The local network access class diagramis shown in FIG. 11.

Each netpage user 800 has a last selected user phone. This is the phonemost recently selected by the user, and is the phone to which remotecontrol commands are sent by default.

Each phone user 501 can have a number of phone remote controls 509. Aphone remote control 509 has a number of phone control functions 510associated with it, each with a function identifier. The functionidentifier is used to look up the control code for the function 514 fromthe manufacturer 511. A phone remote control 509 may be phone-specific524, or may be a multi-phone remote control 525 (i.e. used to controlmore than one phone). The phone control class diagram is shown in FIG.14.

A phone-specific remote control only operates the phone for which it wasprinted. A multi-phone remote control may operate several phones. Theuser selects a phone on the phone remote controls to indicate whichphone is current.

Each manufacturer 511 may have a number of phone models 512. Each phonemodel 512 has a phone type 505, and has information about the phone'scapabilities, including its ability to be remotely controlled, andwhether it provides local network access. If a phone has the ability tobe controlled remotely it has associated with it a phone controlinterface 513, which contains information about the remote control phonefunctions 514 available. Each phone function 514 has a functionidentifier and the control code to perform the function. The phoneinformation class diagram is shown in FIG. 10.

Each netpage user 800 has a contact list 517 comprising a number ofcontacts 518. Each contact 518 has a name, and may be a number ofaddresses 519 and a number of phone numbers 520. Each contact address519 has the address text and a description (e.g. home, business, etc.).Each contact phone number 520 has a phone number and a description (e.g.home, business, mobile, fax, etc.). The contact list diagram is shown atFIG. 12.

Telephone Control User Interface

The user typically obtains the netpage user phone list 527 main pagefrom the user's contact list 529. Alternatively the user obtains thepage from the phone control application's entry in the netpage systemapplication catalogue, obtained via the netpage printer's help page. Theuser may also bookmark the page and subsequently obtain it via theirfavorites list, or obtain it via their history list.

The phone control user interface flow is shown in FIG. 19.

Remotely Controlling a Phone

Once a phone is registered for remote control, the user can control thephone by pressing printed netpage control buttons.

Contact List

The user's contact list 529, shown in FIG. 21, gives telephone numbersfor each contact. The user presses the <Call> button 535 beside atelephone number to cause their last selected phone to dial the number.

As an alternative to immediately dialing the number, the telephonecontrol application may transmit the phone number to the phone withoutcausing the number to be dialed.

As another alternative, the telephone control application may cause thephone to ring. When the user answers the phone the selected number isthen automatically dialed and the call connected. This allows the userto verify that they are using the correct phone.

The user presses the <Send Short Message> button 536 to compose a shorttext message to be sent to the contact's chosen phone. A compose shortmessage page 530 is printed, as shown in FIG. 22.

A button for each of the user's registered phones is shown at the bottomof the contact list 529. The button is labeled with the phone aliasspecified by the user when the phone was registered. The user presses aphone selection button to make the phone current. Any remote controlcommands subsequently invoked are sent to this phone.

If the user presses the <My Phone Details> button 537, a user phone listpage 527 is printed, as shown in FIG. 24.

The contact list user interface flow is shown in FIG. 17.

This system, as described, makes not explicit provision for numbersinternal to a private phone system (e.g. extensions on a PBX/PABX).However, it can be trivially extended to do so by recording, for eachnumber in a contact list, whether it is associated with a particularprivate phone system.

Because the netpage printer or other base station through which the userinteracts with the telephone control application has a known geographiclocation recorded by the netpage registration server, the telephonecontrol application can correctly route non-local calls initiated byroaming users.

If the roaming user's mobile phone is acting as the netpage basestation, then the mobile network is able to inform the netpage system ofthe phone's approximate geographic location.

For the purposes of roaming, phone numbers can be stored fullyqualified, i.e. with non-local prefixes, in the user's contact list, andthe telephone control application can strip these off as appropriate forregional or local calls. Alternatively, explicit geographic regions orlocations can be associated with phone entries.

Compose Short Messages

The user can send a short message to a contact's chosen phone bypressing the <Send Short Message> button 536 on the contact list 529(FIG. 22). A compose short message form 530 (FIG. 22) is printed.

The contact's name and phone number as shown at the top of the page. Theuser writes the short message and presses the <Send Short Msg> button538. Netpage converts the message to text using online handwritingrecognition, and sends the short message to the phone via the phone'snetwork provider.

Business Card

A person's business card 531 can be printed with netpage buttons. Anexample of this is shown in FIG. 23. The user (recipient of the businesscard) presses the <Call> button 540 on the business card. The telephonecontrol application causes the user's last selected phone to dial thephone number on the business card.

The business card may contain a <Send Nbr> button 539. When the userpresses this button the phone number is sent to the user's phone, butthe number is not dialed. This facilitates the user saving the phonenumber to their phone's memory. Alternatively, the number could be sentto any other appropriately enabled device, such as a personal organizer.

The business card user interface flow is shown in FIG. 18.

Other buttons which would typically appear on a netpage business cardare not shown here for clarity, but examples are described in ourco-pending application U.S. Ser. No. 09/663,579 filed Sep. 15, 2000(U.S. Pat. No. 6,679,420).

Similarly printed netpage phone control buttons can be printed on anydocument, such as advertisements, telephone directories, etc.

As an alternative, phone number information may be embedded directly inthe netpage tags on a business card or document. This information can beinterpreted directly in the pen or by the base station and used to sendcontrol commands directly from the netpage pen or base station to thephone.

Phone Remote Control

There are two kinds of phone remote control, the phone-specific remotecontrol 526 and the multi-phone remote control 528. Phone-specific andmulti-phone remote controls are both typically printed on demand by theuser. An example of a phone-specific remote control 526 is shown in FIG.27. An example of a multi-phone control 528 is shown in FIG. 28.

The appearance and function of a remote control may depend on the phonetype, model, manufacturer, etc. A manufacturer may provide their ownnetpage remote control which can be pre-printed, or printed by the useron demand.

When the user presses a remote control button on a multi-phone remotecontrol 528, the telephone control application looks up the lastselected phone for the user. The phone being controlled by amulti-remote control 528 is determined by the last selected phone forthe user. This may be set when a phone alias button 550 is pressed onthe control.

A phone-specific remote control 526 is associated with a single userphone. Thus, when the user presses a remote control button on aphone-specific or multi-phone remote control, the phone alias name, andtherefore the desired user phone, is known.

The phone-specific remote control user interface flow is shown in FIG.15. The multi-phone remote control user interface flow is shown in FIG.16.

A remote control button is associated with a remote control function510, which has a unique function identifier (e.g. unique within thephone model). When the user invokes a remote control function 510, thephone control application looks up the phone model 512 in themanufacturer's database to find the phone function 514 control code forthe required function identifier. It then transmits the control code tothe phone or phone network node, or otherwise uses the control code toinvoke the appropriate function on the phone.

Alternatively, the required phone control command may be embedded withinthe netpage tags of a netpage button. In this case, the application doesnot need to look up the manufacturer's database.

Control Command Transmission

The method of transmission for telephone control commands may varydepending on the phone's capability and the user's pen.

A phone with no ability to accept remote control commands can beconnected to requested calls by the phone network provider. When theuser initiates a call using netpage control buttons, the telephonecontrol application sends the request to the phone network provider. Theuser's phone rings and when the user answers the phone, the requestedcall is initiated by the network provider. A synthesized voice messagemay tell the user the number being dialed. The user can immediately hangup to cancel the call request or hold the line while the number is beingdialed.

A phone with remote control capabilities but no wireless controlinterface can be sent remote control commands by a wired connection. Ifthe netpage printer has a direct wired connection to the phone (orPBX/PABX system), remote control commands can be sent directly to thephone. If there is no direct connection to a fixed or PBX/PABX phone,the telephone control application can send remote control commands viathe phone network provider.

For a mobile phone, remote commands can be sent via the phone's mobilephone network provider. A call may be placed by the network provider onbehalf of the phone.

The netpage pen can be augmented to work as an infrared remote control.If the phone is infrared enabled then remote commands can be sentdirectly from the netpage pen to the user's phone. Alternatively,infrared remote commands can be sent from the netpage printer to thephone.

Remote commands can be sent directly from the netpage printer or otherbase station to the phone by some other wireless connection, such asBLUETOOTH™. When the user presses a netpage phone control button, aBLUETOOTH™ connection to the phone is established using the stored linkkey. The telephone control application determines the appropriate remotecontrol command, and the command is sent direction from the printer (orpen) to the phone.

User Phone List

The user phone list 527 main page, shown in FIG. 24, lists the phonesregistered for remote control by a particular netpage user. Listed foreach registered phone is the phone alias, phone type, manufacturer (ifknown), model (if known), phone number, and the date and time the phonewas registered.

To remove the phone from the list, so that it is not longer registeredfor remote control, the user presses the <Remove> button 541. An updateduser phone list is printed.

To print a remote control for a specific phone the user presses the<Print Control> button 542. A phone-specific control page 526 isprinted, an example of which is shown in FIG. 27. To print a multi-phoneremote control the user presses the <Print Multi-Phone Control> button544. A multi-phone control page 528 is printed, an example of which isshown in FIG. 28.

To register a new phone for remote control the user presses the <Add NewPhone> button 543. An add new phone form 532 is printed, as shown inFIG. 25.

The new phone setup user interface flow is shown in FIG. 20.

Adding a New Phone

A new phone can be registered for remote control using the add new phoneform 532 (FIG. 25). This form is printed by pressing the <Add New Phone>button 543 on the user phone list page 527 (FIG. 24). Adding a new phonemay also be initiated on the telephone. The telephone then communicateswith the netpage printer (or telephone control application) causing anadd new phone form 532 to be printed.

If the phone being registered for remote control is an “intelligent”phone which knows about remote control registration, the user selectsthe remote control registration option on the phone's user interface.The phone (or phone system) generates a registration passkey. Thepasskey is typically single-use and has a short life span; it may, forexample, only be valid for 30 minutes. The passkey is displayed on thephone's screen, and the user manually transfers it to the appropriatefield of the add new phone form 532. The entered passkey 547, oncesubmitted to the netpage phone control application, is subsequentlypassed back to the phone (or phone system) by the phone controlapplication. The phone (or phone system) uses the passkey toauthenticate the phone control application, i.e. the phone (or phonesystem) chooses to trust the phone control application on the basis ofthe proffered passkey because the user, who is the nominal owner of thephone, has demonstrated their trust in the pone control application bysupplying the application with the passkey. The remote controlregistration option on the phone can itself be password-protected toprevent access by casual users.

If the phone is not “intelligent” and cannot generate a passkey, theuser can call a remote-control registration service. This servicesprovides either an automated voice response system or a human operator.The user provides some proof of identity, and information about thephone to be registered, and is given a registration passkey.

On the add new phone form 532, the user specifies a phone alias 545 andthe phone number 546 for the phone being added. The user indicates ifthe phone is a fixed phone, a mobile phone, or a PABX phone by markingthe appropriate check box. The user indicates if the phone has localnetwork access by checking either the BLUETOOTH™ checkbox or the IrDAcheckbox. Finally the user enters the registration passkey 547 obtainedfrom the phone or the registration service.

The user signs the form and presses the <Add Phone> button. A confirmnew phone details page 533 is printed, as shown in FIG. 26. If possiblethe phone registration application obtains the manufacturer and modelinformation from the phone.

If the phone details are correct, the user presses the <Call Phone>button 548. The selected phone rings once to confirm to the user thatthis is the correct phone. The user then presses the <Confirm> button549 to finalize the phone registration. An updated user phone list 527is printed, as shown in FIG. 24.

If the phone is BLUETOOTH™-enabled the BLUETOOTH™ bonding process takesplace between the phone and the netpage device (pen or printer), wherebya trusted relationship is established between the two devices on thebasis of the netpage device providing the phone with the correctpasskey. During the bonding process a link key is generated which isstored by or on behalf of both devices, and used for authenticationduring future interactions between the two devices.

The new phone setup user interface flow is shown in FIG. 20

CONCLUSION

The present invention has been described with reference to a preferredembodiment and number of specific alternative embodiments. However, itwill be appreciated by those skilled in the relevant fields that anumber of other embodiments, differing from those specificallydescribed, will also fall within the spirit and scope of the presentinvention. Accordingly, it will be understood that the invention is notintended to be limited to the specific embodiments described in thepresent specification, including documents incorporated bycross-reference as appropriate. The scope of the invention is onlylimited by the attached claims.

1. A method of controlling a function of a device, the device beingoperative to perform the function in response to a command from aprinter, the method including the steps of: providing a printed controlinterface containing information relating to the function and codeddata, the coded data being indicative of an identity of the controlinterface and of at least one reference point of the control interface;receiving, in the printer, indicating data from a sensing deviceregarding the identity of the control interface and at least oneposition of the sensing device relative to the control interface, thesensing device forming the indicating data when placed in an operativeposition relative to the control interface using the coded data; andissuing, by the printer and from the indicating data, the commandrelating to the function to the device.
 2. A method according to claim 1wherein the command relating to the function is associated with at leastone zone of the control interface, the operative position being withinat least one of the zones.
 3. A method according to claim 1, wherein thefunction is selected from the group comprising: selecting the devicefrom a list of devices; selecting a contact number from a list ofcontact numbers; registering user access to control the device; andauthorizing user access to control the device.
 4. A method according toclaim 1, wherein the command is selected from the group comprising:causing the device to perform the function; and issuing the command to acontrol system to cause the device to perform the function, the devicebeing operatively connected to the control system.
 5. A method accordingto claim 4, in which the command is issued through the sensing device.6. A method according to claim 4, in which the command is issuedindependently of the sensing device.
 7. A method according to claim 1,wherein the device is a communication device.
 8. A method according toclaim 7, wherein the sensing device is embedded in the communicationdevice.